Yong Xing

Discussion in 'Motorized Bicycle General Discussion' started by Antony, Aug 25, 2008.

  1. Antony

    Antony New Member

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    I bought a 50cc kit from this Chinese co. which includes a muffler and pull start.

    My problem is I have a very rudimentary knowledge of mechanics and an even more rudimentary knowledge of interpreting Chinese English into English English. eg Having worked out I needed to remove a cover to fit the chain I then discovered the chain was too big to fit on the sprocket, so I e-mailed the question and received the reply. 'Hi friend. Remove the cover.' I solved it by breaking the chain on the master link.

    There was no advice on how to fit the throttle cable and nor the clutch cable. What it fits to and how it operates. So I asked them. This time the reply was. 'Hi friend. We can replace cable for 25 USD.' (I'm English BTW). This and a few other problems not covered by their scant instructions has left me in a bit of a quandry.

    Is there anyone on here who has successfully fitted one of these beasts and if so can I pick your brains please?

    Thank you in anticipation.

    Ant.
     
  2. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Hi Friend!
    This site has thousands of posts that will help you get your Chinese in frame bicycle motor fitted up and running.
     
    #2 Bikeguy Joe, Aug 25, 2008
    Last edited: Aug 25, 2008
  3. Ilikeabikea

    Ilikeabikea Moderator
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    Welcome to the forum. Lots of motorized bicycle enthusiasts here. Any of them would more than happy to help you. Go to the classic posts section and most of the questions you have will probably already be answered there. If you can't find the answer feel free to ask. Someone will answer or will post a link. Who knows one day maybe we will have a Chinese English to English English dictionary on here. :D We're glad you joined us and don't be afraid to ask questions. We have some very talented folks here.............................
     
  4. deacon

    deacon minor bike philosopher

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    If you have problem just ask specific question and someone will come riding up on a white horse to save the day. At least it works that way most of the time.
     
  5. jasonh

    jasonh New Member

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  6. Saddletramp1200

    Saddletramp1200 Custom MB Buiilder

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    Waste not want not. Got a pet bird? Those instructions work just fine in the bottom of the cage! It's ok now, your here:) we will help in any way we can! (c)
     
  7. Antony

    Antony New Member

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  8. Antony

    Antony New Member

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    jasonh kindly directed me to a wonderful site that gives a blow by blow account of how to fit, but I've run up against another seemingly unfathomable problem.

    'Reach into the space below the clutch lever and
    spin the small chain sprocket with your finger.'

    It doesn't spin. This appears to be because it's in gear and I don't know how to get it out of gear. I've fitted the cable and springs correctly and the two controlling levers I have operate ( one takes it from 1 to 3 and the smaller one takes it back to one again) but this sprocket seems to be constantly engaged.

    Any suggestions?

    Ant
     
  9. Goat Herder

    Goat Herder Gutter Rider

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    rotflrotflrotflrotflDud this sight is awsome just read a little. The spokes will break if you put the rubber peices in the wrong place . Trust us! The rubber peices only go as like this , they protect your spokes. Put one between your sprocket and the spokes, then one the other side the inside of the hub other side of spokes your last rubber peice. Then the two or three metal peices, depends on weather your have the 6 millimeter or 8 stud bolt on set up. Finaly studes and washers, and nuts. Bottom line the rubber protects the the spokes.
     
  10. Antony

    Antony New Member

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    Thanks.

    I read Norman's witty, yet helpful post on the clutch. One thing he points out is the adjustment of the flower nut. It seems that no matter what I turn (this flower thing included) the whole engine is turning over.

    There are three levers. The biggest is the brake lever. The next biggest is the one that that has a dial that goes from one to three and the smallest goes back from three to one. All levers are functioning, though now I'm wondering why they're numbered. Is it perhaps the case that when it's on #1 it won't be strong enough to move the chain?

    This is what I'm up against:-

    'At the ends of the handle of the clutch, please ensure keep a certain free space, generally 2-3 mm. Only proper space able to ensure the timely decoupling of the clutch and free of slipery. In the course of adjustment, loosen the handle of the clutch, turn the hollow-center screws, turn outside for decrease of space, turn inside for increase of space. After adjustment, tighten the nuts and avoid loose. If slipery in case of proper space, dimantle the cover of the clutch to check if the cover sleeve of the clutch is loose, and tighten if necessary.'

    And that's their 'definitive' clutch bit.

    This site http://www.livefastmotors.com/pdf/two_cycle.pdf that jasonh posted shows what appears to be the exact same engine, but without a brake type lever for disengaging, just the two click levers as previously described, though on the throttle handle there is a kill switch.

    Any further thoughts would be much appreciated.

    Thanks also goat herder. Now I have to choose between your advice and theirs, which reads:-

    'Install the assembly of gear disc at the rear wheel of the bicycle, cover the outside tightening rubber at the rear axle, then cover the assembly of gear disc, its concave side closely attached to rubber. At the other side of the steel wires of the rear axle of the bicycle, install the inside tightening rubber, press the outside tightening rubber with small and large tightening plates. Install and tighten the assembly of gear disc at the rear wheel. In the course of tightening, ensure the radial and axial deflection between the gear disc and the rear axle less than 1 mm. Don't tighten excessively, tighten only for alignment of the assembly.'

    Hmm. Difficult choice.

    Ant
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    As to your problem, sometimes, even if the clutch is disengaged, the sprocket can be very hard to turn when new.
     
  12. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Don't even bother with "instruction" that comes from China...you will be lost in the wilderness for days.
     
  13. bicycleengine

    bicycleengine New Member

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    I know a good website from Austrilia.
    that is www.zbox.au,
    you can go there and find the fitting instruction
     
  14. Saddletramp1200

    Saddletramp1200 Custom MB Buiilder

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    Another way is to use a spark plug wrench after you take the spark plug out and rotate the counter sprocket. Some kits come with the wrench.
     
  15. Nomad

    Nomad New Member

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    Anthony, remove the spark plug, remove the clutch actuator (3 screws) and use a 19mm socket wrench to rotate the front sprocket, start the chain on the bottom of the sprocket. The instructions show both rubber gaskets on the same side of the spokes, I think you will find that most on here suggest that this is incorrect, "sandwich" the spokes between the rubber gaskets, and IF you can CUT the gaskets with a SCISSOR get different ones.... you will need a stout sharp knife to cut only one gasket for the "inside of the spokes"..... good luck
     
  16. Merlin

    Merlin New Member

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  17. amealnet

    amealnet New Member

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    who sells the best bicycle motors?
     
  18. Saddletramp1200

    Saddletramp1200 Custom MB Buiilder

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    Oh amealnet, that is a tough question. I use the motors thatsdax supplys. They have fantastic customer support and a very good motor I think.
     
  19. Smoothe

    Smoothe New Member

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    I bought a Dax 70cc and I'm :ride2:. !!!!!!!!!!

    Duane returned my calls and was really helpful, and shipping was not as long as expected. I just got the bike put together today and I'm really happy with it.
     
  20. special_k

    special_k New Member

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    hi there...have you had any joy with it all Antony? I have just got my bike and engine kit from them...with a 2 sided peice of paper...struggling through sorting it all out myself...but the links and advice here are great...i recieved bike with damage and scratches...emailed them...and nothing...they even put 2 bloody left pedals in!!!
     

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